Quick Links. Download this manual. Made from heavy duty aluminum, the CP6 is easily assembled, yielding excellent performance and reliability from. The CP6 is a compact vertical antenna using loading-coil radials. The compact size offers many options on mounting.
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Forgot Password. Reviews Home. OK so the "money" was zero, this came pre-owned with the pre-owend rig! An old antenna that had had lots of repairs done and was showing it's age, cut my teeth on HF with this so steep learning curve with tuning, ongoing repairs, quite easy to dismantle as I had radials just above head height and could lower down and reach each section to dismantle. Never could get all 6 bands tuned at the same time, I'd get three in SWR then the other 3 would drop out But in all of that year or so of owning got some great experience and contacts over the pond and Russia etc.
I would seriously think of getting another, maybe the CP5 with higher power Unfortunately my experience has been bad. The traps are poorly constructed and fail in the wind. I've a useless heap of scrap. After problems found with traps, contacted Diamond Japan, with issue of QC. New trap shipped with correct construction. After getting my licence in August, I commissioned the antenna and worked satisfactory on 5 band no tx on 6m After months noticed a change in VSWR on most bands above 10m, then 10m when bad.
Eventually, I got the antenna down and checked the antenna out. Dismantled antenna and trap. Found broken connection on bottom of 10m coil and bottom of 15m coil at earthing point. These breaks were basically down to bad design and construction of the trap. Only 2 rivits are used to secure the trap insulatated former to the aluminium sections. These rivits are only seperated by 45 deg, which results in a lot of play and movement of parts in the wind and snap! If Diamond had put 4 rivits at 90 deg spacing, no issue.
Drilling thru and puting extra rivets solves the problem, re-assemble and away you go. Now you have a damb good antenna which does not need a ground and is suited to restricted spaces. With this modification done, I would give the antenna a 5, but as it is bad QC from Diamond it gets a 2. I've reordered a cp-6 today so it'll be a few mths before it's in the air.. Hopefully it'll do the job the cp-5 did back in I replaced the wire, 24mts of it with a slightly heavier gauge wire and removed the plastic pole holders and replaced them with aluminium pole holders wrapped in insulating tape and a double u bolt on each holder, so it's been repaired and it work's fine now and resonant on 15m band Concept of antenna is great and trapped radial elements are useful when used in areas where real estate is limited.
After six months of use, I noticed that the capacitive hat radials towards the top of the antenna that were seemingly manufactured from a thin stainless steel tube with a threaded connection point at one end were rusting at the connection to the antenna. I was stunned to discover that the threaded connection point to the alumninum ring holder was a MILD STEEL stub with kurled edge and thread on one end that was inserted into the end of each capacitive hat radial.
I verified that the mild steel was attracted to magnets and therefore must have contained iron. Being dissimilar to metals around it, this promoted a galvanic effect and rust Difficult to detect when inspecting a new antenna as it appears that the entire assembly is stainless.
Surely all CP-6 antenna's if manufactured this way will rust and this is a potential even likely? I have had the CP-6 for a couple of years and really like it. The antenna is very easy to assemble and tune. The performance has been outstanding, working all over the world.
I am not a contester but I "hunt and pounce" on stations that I have not worked before. I have gotten through to some rare stations that were very busy, even with the watt IC I have. I have also been through several typhoons and the antenna has survived very well. I would recommend the CP-6 and would buy it again if I ever needed a replacement. I use a RigExpert AA Pro to tune it to the portion of the band I will normally work and the antenna then just performs I have never had any problem with the construction of the antenna or the traps.
If you are looking for a good 6 band vertical that is easy to install, holds up well in adverse weather and performs well, this is an antenna to consider. This antenna is the worst piece of kit that I have ever bought. I bought this six years ago to try and get active on HF from a very small garden, after being used to used to almost unlimited antenna space.
At first I thought it was great, seemed to work OK, but the only thing I had to compare it with was a piece of wire. Went together OK, had to remove all but one of the top rods to get it to work on 80, After about 18 months, I noticed the "sway" in the wind was jerky, very soon after that it stopped working.
As others have found, the construction of the traps is atrocious. After repair it lasted a bit longer, but the plastic inside the trap is soft, and eventually it failed again, but the more holes you add for more repairs, the weaker it gets. Last week I took it down and put up a Moonraker Although the Moonraker doesn't seem to get good reviews, it is a lot better than the CP6, signals well up, and hugely quieter regarding background noise mainly local domestic The CP6 is sold in the UK as a quality antenna, at a high price.
The quality is appalling, and it is worth about a third of the selling price. Now the price may be high due to large profits by the UK dealers, or maybe it is expensive from Diamond, but either way allowing for the quality and price it can only have a zero rating, comparing it with other makes like my TH3Jnr, which at 30 years old is still good. Have had the Diamond CP-6 up for over 10 years. Has worked very well.
I'm starting to notice problems with my radio not being able to TX full power. Will have to look into this to find out what the problem is. I boutgh a Diamond CP6 antenna last year for portable activity. Bought it one year ago: It's easy to mount, no problems with SWR. Not very practical. In a nutshell, a good product for beginners, or if you do not want to spend more money. More than 12 Months. There is a delay before newly submitted reviews are Approved.
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The eHam. Made from heavy-duty aluminum, the CP6 is easily assembled, yielding excellent performance and reliability from a compact base station. SSB requires a tuner.
Diamond Antenna CP6 Assembly Instructions
DIAMOND ANTENNA CORPORATION